JP6343543B2 - Laser processing machine, laser processing method, processing data creation device - Google Patents

Description

  The present invention relates to a laser processing machine and a laser processing method for drilling a plate material with a laser, and a processing data creation device for generating processing data for drilling a plate material with a laser processing machine.

  A laser processing machine that cuts a metal plate with a laser is widely used. As described in Patent Document 1, when a plate material is drilled by a laser processing machine, a hole portion cut by the laser becomes scrap to be removed from the plate material.

  As one of the methods for removing scrap from a plate material, a hole forming region that is a portion for forming a hole in the plate material is divided into a plurality of sections by a laser, and then the cut sections are dropped downward as scrap pieces. There is. This method is used when the hole forming area (ie, scrap) is relatively large.

Japanese Patent No. 3825118

  When adopting the method of chopping and dropping the hole forming region into a plurality of sections, there is a problem that a concave or convex portion is generated at the position where the dividing line of the hole side end of the plate material in which the hole is formed is formed. is there.

  When the convex portion is formed, the convex portion must be removed by sanding. If a recess is formed, the recess must be filled. The work of removing the convex portion or filling the concave portion requires a great amount of labor, and may result in poor quality. Therefore, it is required to improve the quality of the cut surface when holes are formed in the plate material.

  The present invention provides a laser beam machine, a laser beam machining method, and a machining data creation device that can improve the quality of a cut surface of a hole when a plate material is drilled while cutting a hole forming region into a plurality of sections. For the purpose.

  In order to solve the above-described problems of the prior art, the present invention provides a laser head that irradiates a plate material with a laser that cuts the plate material, and the laser head is separated from the plate material by a predetermined distance. A moving mechanism for moving the laser head relative to the plate material in a first direction along the surface of the plate material and a second direction orthogonal to the first direction, and the moving mechanism A laser head is moved in the first and second directions relative to the plate material, and a hole forming region surrounded by a predetermined outer peripheral line is cut with a laser so as to form a hole in the plate material. A control device for controlling, wherein the control device sets a dividing line of zero or one or more first directions in the hole forming region, and is orthogonal to one or more of the first directions in the hole forming region. Set the dividing line in the second direction When the hole forming region is set to be divided into a plurality of sections, the first position on the outer peripheral line in the section located at the corner is set as a cutting start point for starting the cutting of the outer peripheral line, Of the two intersections of the outer peripheral line and the dividing line in the second direction closest to the cutting start point, the intersection point closer to the cutting start point is the first intersection point, the side away from the cutting start point When the intersection line is cut as the second intersection point, and the outer peripheral line is cut from the cutting start point toward the second intersection point in a direction that passes more intersection points between the outer peripheral line and the dividing line, The second position on the outer circumference line in the first section that has passed the second intersection point or the second intersection point is set as a dividing point for dividing the cutting of the outer circumference line, and the cutting start point on the outer circumference line is Cut to the dividing point as the initial cutting line. When the area from the division point to the cutting start point on the outer peripheral line is a final cutting line, the hole forming region is cut so that the sections other than the section including the final cutting line fall as one section. Cutting the dividing line in the second direction closest to the cutting start point and the final cutting line so as to control the section including the final cutting line so that it is dropped last. Provided is a laser processing machine.

  In the present invention, in order to solve the above-described problems of the related art, a dividing line of zero or one or more first directions is set in a first direction in a hole forming region surrounded by a predetermined outer peripheral line in a plate material. The hole forming region is set to be divided into a plurality of sections by setting one or a plurality of dividing lines in the second direction in a second direction orthogonal to the first direction in the hole forming region. A cutting start point for starting cutting of the outer peripheral line is set at a first position on the outer peripheral line in a section located at a corner, and the outermost line and the first point closest to the cutting start point are set. Of the two intersection points with the dividing line in the direction of 2, the intersection point closer to the cutting start point is the first intersection point, the intersection point away from the cutting start point is the second intersection point, and the outer circumferential line is More passes through the intersection of the outer peripheral line and the dividing line In a direction to cut from the cutting start point toward the second intersection point, the second intersection point or the second position on the outer circumferential line in the first section past the second intersection point, A dividing point for dividing the cutting of the outer peripheral line is set, cutting from the cutting start point to the dividing point in the outer peripheral line as an initial cutting line, and finally from the dividing point to the cutting start point in the outer peripheral line When the cutting line is used, the hole forming area is cut so that the sections other than the section including the final cutting line fall as one section, and divided in the second direction closest to the cutting start point By cutting a line and the final cutting line, a section including the final cutting line is cut so that it falls last.

  In order to solve the above-described problems of the prior art, the present invention sets the hole forming area to 0 or 0 based on graphic data in which a hole forming area for forming a hole of a predetermined size and shape is set in a plate material. A division number setting unit configured to set the number of divisions by one or more division lines in the first direction and one or more division lines in the second direction orthogonal to the first direction; An outer periphery cutting direction setting unit for setting a cutting direction for cutting the outer periphery of the hole forming region, and a first position on the outer periphery in a partition located at a corner when the hole forming region is divided into a plurality of partitions, Out of the two intersections of the approach position determination unit for determining the approach position that is the position to start cutting the outer periphery line, the outer periphery line, and the dividing line in the second direction closest to the approach position The approach A crossing point closer to the position is a first crossing point, a crossing point far from the approach position is a second crossing point, and the outer peripheral line is cut in the cutting direction from the approach position toward the second crossing point A division point that determines the second position on the outer circumference line in the first section that has passed the second intersection point or the second intersection point as a division point that is a position for dividing the cutting of the outer circumference line. The determining unit and the processing order for processing the hole forming region are as follows: (1) Cutting in the cutting direction set by the outer peripheral cutting direction setting unit from the approach position to the dividing point on the outer peripheral line as an initial cutting line (2) When the area from the division point to the approach position on the outer circumferential line is the final cutting line, the recording hole forming area is divided into sections other than the section including the final cutting line as one section. Cut into (3) By cutting the hole forming region from the dividing line in the second direction closest to the cutting start point and the final cutting line, a section including the final cutting line falls last. The processing order determining unit that determines the order of (1) to (3), and the processing for controlling the laser processing machine so as to process the plate material in the processing order determined by the processing order determination unit Provided is a machining data creation device comprising a machining data generation unit for generating data.

  According to the laser beam machine, the laser beam machining method, and the machining data creation device of the present invention, the quality of the cut surface of the hole can be improved when the plate material is drilled while cutting the hole forming region into a plurality of sections. . Therefore, according to the laser beam machine, the laser beam machining method, and the machining data creation device of the present invention, the quality of the product can be improved.

It is a perspective view showing the example of the whole composition of the laser beam machine of one embodiment. It is a perspective view for demonstrating the skid with which the laser beam machine shown in FIG. 1 is provided. It is a block diagram which shows NC apparatus which controls a laser processing machine, CAM connected to NC apparatus, and CAD connected to CAM. It is a block diagram which shows the functional concrete structure of CAM shown in FIG. It is a figure which shows an example of the hole formed in a board | plate material. It is a figure which shows an example of the division method and outer periphery cutting direction which the division number and outer periphery cutting direction setting part shown in FIG. 4 sets. It is a figure which shows the candidate point of the approach position which the outer periphery cutting | disconnection approach position and division | segmentation point determination part shown in FIG. 4 sets. It is a figure which shows the candidate point of the approach position which the outer periphery cutting | disconnection approach position and division | segmentation point determination part extracted considering the outer periphery cutting | disconnection direction. It is a figure which shows the approach position and division | segmentation point which the outer periphery cutting | disconnection approach position and division | segmentation point determination part determined. It is a figure for demonstrating the meaning of the candidate point of an approach position. It is a figure which shows the process order which the process order determination part shown in FIG. 4 determines when the approach position and division point shown in FIG. 9 are set to the hole formation area. It is a figure for demonstrating the case where an uneven | corrugated | grooved part is hard to generate | occur | produce on the outer peripheral line of a hole formation area. It is a figure for demonstrating the case where an uneven | corrugated | grooved part tends to generate | occur | produce on the outer peripheral line of a hole formation area. It is a figure which shows an example of the method of a division | segmentation in case a hole formation area is an oblong hole. It is a figure which shows an example of the process order in the case of FIG. 13A. It is a figure which shows an example of the method of division | segmentation when a hole formation area | region is a long hole. It is a figure which shows an example of the process order in the case of FIG. 14A. It is a figure which shows an example of the method of a division | segmentation in case a hole formation area is a round hole. It is a figure which shows an example of the process order in the case of FIG. 15A. It is a figure which shows an example of the method of a division | segmentation in case a hole formation area is an elongate square hole. It is a figure which shows an example of the process order in the case of FIG. 16A. It is a flowchart which shows the preparation procedure of the process data by the process data creation apparatus of one Embodiment. It is a flowchart which shows the specific procedure of step S06 in FIG. It is a flowchart which shows the specific procedure of step S07 in FIG. It is a figure which shows an example of the division | segmentation method and outer periphery cutting direction in case a hole formation area | region is a square hole. It is a figure which shows the division located in a corner among the several divisions shown in FIG. It is a figure which shows the candidate point of the approach position in the case of FIG. It is a figure which shows the candidate point extracted in consideration of the outer periphery cutting direction from the candidate point shown in FIG. It is a figure which shows the approach position and division | segmentation point which were determined from the candidate point shown in FIG. It is a figure which shows the process order in the case of FIG.

  Hereinafter, a laser beam machine, a laser beam machining method, and a machining data creation device according to an embodiment will be described with reference to the accompanying drawings.

  First, an overall configuration example of a laser processing machine 100 according to an embodiment will be described with reference to FIG. In FIG. 1, a table 60 for placing a metal plate W is provided on a base 50. In the table 60, a plurality of skids 61 made of, for example, iron plates are arranged in the X direction.

  As shown in FIG. 2, a plurality of triangular protrusions 610 are formed on the upper end portion of the skid 61. Therefore, the plate material W is supported by the plurality of protrusions 610. An interval between two adjacent skids 61 is an interval 61i, and an interval between two adjacent protrusions 610 is an interval 610i. The intervals 61i and 610i are referred to as skid intervals.

  The interval 61i and the interval 610i may be the same, and the interval 610i may be smaller than the interval 61i.

  Instead of the plate-shaped skid 61, a plurality of rod-shaped skids with sharp tips may be arranged in the X direction and the Y direction orthogonal to the X direction.

  Returning to FIG. 1, the laser beam machine 100 includes a portal frame 70 arranged so as to straddle the table 60. The frame 70 includes side frames 71 and 72 and an upper frame 73. The frame 70 is configured to move in the X direction along a rail 51 in the X direction formed on the side surface of the base 50.

  A carriage 80 that is movable in the Y direction is provided in the upper frame 73. A laser head 81 that emits a laser is attached to the carriage 80. The laser head 81 is configured to arbitrarily move in the X and Y directions above the plate material W by moving the frame 70 in the X direction and the carriage 80 in the Y direction.

  The plate W is punched by irradiating the plate W with a laser while the laser head 81 moves in the X direction or the Y direction. In addition, the assist gas is sprayed on the plate material W in accordance with the laser irradiation. In FIG. 1, illustration of the structure which sprays assist gas is abbreviate | omitted.

  The laser head 81 is also movable in the Z direction. When the laser head 81 moves above the plate material W, the laser head 81 is controlled so as to keep a distance from the plate material W at a predetermined distance.

  An NC device 30 for controlling the laser processing machine 100 is attached to the frame 70. The NC device 30 controls the laser processing machine 100 in accordance with processing data (NC data) for processing the plate material W. The NC device 30 is a control device that controls the laser processing machine 100.

  The laser processing machine 100 shown in FIG. 1 is configured such that the table 60 is fixed and the laser head 81 moves in both the X direction and the Y direction. The position of the frame 70 in the X direction may be fixed, and the table 60 may be configured to move in the X direction.

  The frame 70 that moves in the X direction along the rail 51 and the carriage 80 that moves in the Y direction have the first direction and the first direction along the surface of the plate W relative to the plate W. Is a moving mechanism that moves in a second direction orthogonal to the first direction.

  The moving mechanism relatively moves the laser head 81 in the first and second directions with the laser head 81 spaced apart from the plate material W by a predetermined distance. As described above, the moving mechanism may be configured by the table 60 that moves in the X direction and the carriage 80 that moves in the Y direction.

  Consider a case where the hole Wop is formed by cutting the plate material W as indicated by a two-dot chain line. A portion where the hole Wop is formed is referred to as a hole forming region. It may be necessary to finely cut the hole forming region in the plate material W into a plurality of sections and to drop the cut sections as scrap pieces smaller than the skid interval.

  When the plate material W is drilled while cutting the hole forming region into a plurality of sections, a concave portion or a convex portion (hereinafter referred to as a concavo-convex portion) is formed at the end of the plate material W on the hole Wop side. Specifically, at the end of the plate W on the hole Wop side, an uneven portion is formed at a position where a dividing line for cutting the hole forming region into a plurality of sections is formed.

  Next, in order to reduce the number of uneven portions formed at the end of the plate W on the hole Wop side when the plate W is drilled while cutting the hole forming region into a plurality of sections, the processing data is Explain how to create it.

  In FIG. 3, CAD (Computer Aided Design) 10 creates CAD data including information on the position, shape, and size of the hole Wop formed in the plate material W. The CAD data is graphic data in which a hole forming area for making a hole having a predetermined size and shape is set in the plate material W. The CAD data is input to a CAM (Computer Aided Manufacturing) 20.

  The CAM 20 creates NC data as described later. An operation unit 21 is connected to the CAM 20. The CAM 20 may create NC data partially based on an operator's manual setting when the operator operates the operation unit 21.

  The CAM 20 constitutes a machining data creation apparatus according to an embodiment. The NC data is input to the NC device 30. The CAM 20 and the NC device 30 included in the laser processing machine 100 are connected by, for example, a network. The CAD 10 and the CAM 20 may be installed at a location away from the laser processing machine 100.

  A specific configuration and operation of the CAM 20 that creates NC data will be described with reference to FIG. In FIG. 4, the target hole data acquisition unit 201 acquires target hole data indicating the shape and dimensions of the hole Wop to be divided based on the input CAD data. The target hole data is input to the division number / peripheral cutting direction setting unit 202.

  The division number / peripheral cutting direction setting unit 202 sets the number of divisions for dividing the hole forming region and the direction for cutting the outer periphery of the hole forming region (peripheral cutting direction). The number of divisions includes how to divide. The method of division is how many divisions in the X direction and how many divisions in the Y direction. The division number / peripheral cutting direction setting unit 202 can automatically set the division number and the outer cutting direction.

  One of the X direction and the Y direction is a first direction and the other is a second direction. The division number / peripheral cutting direction setting unit 202 sets a division line in the first direction of 0 or 1 or more, and sets division lines in one or a plurality of second directions, so that a plurality of hole formation regions are formed. Can be set to divide into compartments. That is, the division number / peripheral cutting direction setting unit 202 may not set a division line in the first direction.

  In the present embodiment, a case where the X direction is the first direction and the Y direction is the second direction will be described.

  By keeping the skid interval of the skid 61 in the CAM 20, the division number / peripheral cutting direction setting unit 202 can automatically set the optimum division number based on the size of the hole Wop and the skid interval. it can.

  The number of divisions / peripheral cutting direction setting unit 202 may set the number of divisions and the outer perimeter cutting direction based on a manual setting in which the operator operates the operation unit 21 as indicated by a dashed arrow.

  The division number / peripheral cutting direction setting unit 202 may be separated into a division number setting unit and an outer cutting direction setting unit.

  An example of operations in the target hole data acquisition unit 201 and the number of divisions / peripheral cutting direction setting unit 202 will be described with reference to FIGS.

  As illustrated in FIG. 5, it is assumed that the target hole data acquisition unit 201 acquires target hole data including a rectangular outer peripheral line 40 for forming a hole Wop in the plate material W. The hole Wop here is an oblong hole. When the plate material W is cut along the outer peripheral line 40, the portion inside the outer peripheral line 40 becomes the scrap 400.

  As shown in FIG. 6, as an example, the division number / peripheral cutting direction setting unit 202 divides the hole formation region (scrap 400) surrounded by the outer peripheral line 40 into four in the X direction and two in the Y direction. Set to 8 divisions. The division method shown in FIG. 6 is referred to as a 2-row, 4-column division.

  Moreover, as shown in FIG. 6, the division number / peripheral cutting direction setting unit 202 sets the outer peripheral cutting direction to the counterclockwise in FIG. 6 as an example. Counterclockwise and clockwise are names for convenience. The division number / peripheral cutting direction setting unit 202 may be set to move the laser head 81 in a direction corresponding to the counterclockwise or clockwise direction on the plate material W.

  When the division number / peripheral cutting direction setting unit 202 sets the division number to 8 as shown in FIG. 6, the scrap 400 is divided into scrap pieces of the sections 401 to 408.

  Returning to FIG. 4, the outer-peripheral cutting approach position / division point determination unit 203 determines the approach position when cutting the outer peripheral line 40 based on the number of divisions and the outer-peripheral cutting direction set by the division number / peripheral cutting direction setting unit 202. decide.

  An example of the approach position determination operation in the outer periphery cutting approach position / division point determination unit 203 will be described with reference to FIGS. First, in order to reduce the number of uneven portions formed at the end of the plate W on the hole Wop side without considering the outer cutting direction shown in FIG. One of the candidate points 4011, 4012, 4021, 4022, 4071, 4072, 4081, and 4082 shown.

  If approach point candidate points are set in sections (sections 401, 402, 407, and 408 in FIG. 7) positioned at corners in the X direction and the Y direction, it is possible to reduce the number of uneven portions. In the case of the eight divisions shown in FIGS. 6 and 7, if candidate points are provided in addition to the sections 401, 402, 407, and 408, the number of places where uneven portions are generated increases by one.

  Candidate points 4011, 4021, 4071, and 4081 may be located at any position in the X direction side portion of the outer peripheral line 40 in the sections 401, 402, 407, and 408. In FIG. 7, the candidate points 4011, 4021, 4071, and 4081 are located substantially at the center of the portion on the X direction side.

  Candidate points 4012, 4022, 4072, and 4082 only need to be located at any position in the Y direction side portion of the outer circumferential line 40 in the sections 401, 402, 407, and 408. In FIG. 7, the candidate points 4012, 4022, 4072, and 4082 are located substantially at the center of the portion on the Y direction side.

  Here, candidate points for easy understanding are indicated by black circles. The specific meaning of approach point candidate points will be described later.

  The outer periphery cutting approach position / division point determination unit 203 extracts candidate points that can drop the sections 401 to 408 one by one in consideration of the outer periphery cutting direction shown in FIG. Here, since the outer periphery cutting direction is counterclockwise, the outer periphery cutting approach position / division point determination unit 203 extracts candidate points 4021, 4022, 4071, and 4072 as final candidate points as shown in FIG. 8.

  In order to cut the hole forming region into the scrap pieces of the sections 401 to 408, the laser processing machine 100 may process the plate material W as follows. The laser beam machine 100 cuts boundaries between the sections 401, 403, 405, and 407 and the sections 402, 404, 406, and 408 by a dividing line CX1 that is divided in the X direction.

  The laser beam machine 100 uses the dividing lines CY1 to CY3 that divide in the Y direction, the boundaries between the sections 405 and 406 and the sections 407 and 408, the boundaries between the sections 403 and 404 and the sections 405 and 406, and the sections 401 and 402 and the sections. The boundary between 403 and 404 is cut. The laser processing machine 100 cuts the outer peripheral line 40.

  The order of cutting by the dividing line CX1, cutting by the dividing lines CY1 to CY3, and cutting of the outer peripheral line 40 will be described later.

  In FIG. 7, when candidate points other than the candidate points 4021, 4022, 4071, and 4072 are selected and the outer peripheral line 40 is cut counterclockwise, a plurality of sections are clustered by cutting along the dividing line CX1 or cutting along the dividing lines CY1 to CY3. May fall.

  In the case of cutting the outer circumferential line 40 counterclockwise, the candidate points 4021, 4022, and 4022 shown in FIG. It is necessary to cut the outer peripheral line 40 from either 4071 or 4072.

  The peripheral cutting approach position / division point determination unit 203 selects any one of the candidate points 4021, 4022, 4071, and 4072 and determines it as the peripheral cutting approach position. The peripheral cutting approach position / division point determination unit 203 can automatically select an arbitrary candidate point and determine the approach position.

  The peripheral cutting approach position / division point determination unit 203 determines the approach position based on a manual operation in which one candidate point is designated by the operator operating the operation unit 21 as indicated by a broken arrow in FIG. You may decide.

  As shown in FIG. 9, it is assumed that the outer periphery cutting approach position / division point determination unit 203 determines the candidate point 4021 as the approach position as an example.

  The outer periphery cutting approach position / division point determination unit 203 may be separated into an outer periphery cutting approach position determination unit and a division point determination unit.

  Here, the meaning of the approach position candidate points will be described in detail with reference to FIG. When the cutting is started from the candidate point 4021 shown in FIG. 9 and the outer peripheral line 40 is cut, the position of the candidate point 4021 cannot be directly set as the cutting start position.

  As shown in FIG. 10, the pierce Ps is opened by a laser at a predetermined position in the section 402, and the plate material W is cut from the pierce Ps toward the outer peripheral line 40. A dividing line 141 is formed between the pierce Ps and the outer peripheral line 40. The approach position of the outer periphery cutting is a position at which the cutting on the outer periphery line 40 is started where the dividing line 141 continued to the piercing Ps reaches the outer periphery line 40.

  Candidate point 4021 is referred to as approach position A0. The approach position A0 is the first position and is a cutting start point at which cutting of the outer peripheral line 40 is started.

  When the laser reaches the approach position A0 on the outer peripheral line 40, the outer peripheral line 40 can be cut by bending the direction in which the laser head 81 is moved by 90 degrees.

  After determining the approach position A0, the outer periphery cutting approach position / division point determination unit 203 determines a division point for dividing the cutting of the outer periphery line 40 into two on the outer periphery line 40. The dividing point is an outer cutting position at which the cutting of the outer circumferential line 40 is temporarily stopped when the outer circumferential line 40 is cut in the cutting direction set by the division number / outer circumferential cutting direction setting unit 202 from the approach position A0. Become.

  The dividing point is a position where the number of places where the concavo-convex portion is generated can be reduced, and it is necessary to provide it at a position where the scrap 400 is connected to the plate material W. In order to satisfy this condition, the peripheral cutting approach position / dividing point determination unit 203 determines the boundary B13 of the sections 401 and 403 on the outer peripheral line 40 as the dividing point D0, as indicated by white circles in FIG. The dividing point D0 is located at the second position.

  The position where the division point D0 is set can be determined by the following determination method. Of the two intersections between the outer circumferential line 40 and the dividing line CY3 in the Y direction (second direction) closest to the approach position A0 (cutting start point), the intersection on the side close to the approach position A0 is the first intersection, The intersection on the side far from the approach position A0 is defined as a second intersection. A boundary B24 in FIG. 11 described later is a first intersection, and a boundary B13 is a second intersection.

  The intersection on the side closer to the approach position A0 and the intersection on the far side are the intersection on the side closer to the short side on the outer circumference 40 between the approach position A0 and each of the two intersections, and the side on which the longer distance is separated. It is an intersection of.

  As shown in FIG. 9, the outer periphery cutting approach position / division point determination unit 203 may set the division point D0 at the second intersection point.

  Since the outer peripheral cutting direction is set to be counterclockwise here, when the outer peripheral line 40 is cut counterclockwise from the approach position A0 to the dividing point D0, the outer peripheral cutting line becomes the outer peripheral line 40 and the dividing lines CX1, CY1 to CY3. You will pass more intersections with. Therefore, it is possible to reduce the number of places where uneven portions are generated.

  When the outer circumferential line 40 is cut from the approach position A0 toward the second intersection in a direction that passes more intersections with the outer circumferential line 40 dividing lines CX1, CY1 to CY3, the first past the second intersection The division point D0 may be set with the position in the second section as the second position. For example, in FIG. 9, the dividing point D0 may be set in the X direction side portion of the section 401 on the outer peripheral line 40 on the left side of the boundary B13.

  The number of uneven portions generated in this case is the same as when the dividing point D0 is set at the second intersection. However, if the dividing point D0 is set with the position after the second intersection as the second position, the cutting of the dividing line CY3 and the counterclockwise cutting from the dividing point D0 to the approach position A0 are processed by separate piercings. Must. Therefore, processing time and power consumption increase.

  Therefore, it is best that the outer periphery cutting approach position / dividing point determination unit 203 sets the dividing point D0 as the second intersection point.

  The reason why the entire circumference of the outer peripheral line 40 is not continuously cut at once is as follows. The laser head 81 is controlled to maintain a predetermined distance from the plate material W. Therefore, when the outer peripheral line 40 is cut at once and the scrap 400 falls, the laser head 81 may move downward from the hole Wop.

  Moreover, if the outer periphery line 40 is cut | disconnected at once, the quality of the cut surface of the outer periphery line 40 will deteriorate easily. If the outer circumferential line 40 is cut at a time, the scrap 400 may rise.

  Therefore, when cutting the outer peripheral line 40, the cutting in the direction passing through more intersections of the outer peripheral line 40 and the dividing lines CX1, CY1 to CY3 from the approach position A0 to the dividing point D0, and the remaining dividing points It is preferable to divide into a section from D0 to approach position A0.

  Similarly, in the case of an arbitrary approach position other than the approach position A0, the position of the dividing point can be determined by the above-described determination method.

  In FIG. 4, the processing order determination unit 204 divides the division number and outer cutting direction set by the division number / peripheral cutting direction setting unit 202, and the approach position A0 and the division determined by the outer cutting approach position / division point determination unit 203. Based on the point D0, the processing order (cutting order) for cutting the plate material W is determined.

  The processing order determination unit 204 is generally in the order of initial cutting for partially cutting the outer peripheral line 40, divided cutting for cutting the hole forming region (scrap 400), and final cutting for cutting the remaining outer peripheral line 40. The cutting order is determined as follows.

  With such a cutting order, the scrap 400 is kept connected to the plate material W until the outer peripheral line 40 is finally cut. Moreover, a hole formation area | region can be cut | disconnected for every division and it can drop as a scrap piece.

  A specific processing order determined by the processing order determination unit 204 will be described with reference to FIG. As shown in FIG. 11, first, the processing order determination unit 204 sets an outer peripheral cutting line C401 that cuts the outer peripheral line 40 from the approach position A0 to the dividing point D0 as initial cutting, as indicated by a solid line. # 1 attached to the outer peripheral cutting line C401 in parentheses indicates the first cutting.

  The processing order determination unit 204 sets a dividing line CX1 in the X direction as indicated by a thin broken line next to the outer peripheral cutting line C401. The dividing line CX1 is a first dividing line that intersects the outer peripheral cutting line C402 of the final cutting described later. # 2 attached to the dividing line CX1 in parentheses indicates the second cutting line.

  The processing order determination unit 204 sets the division lines CY1 and CY2 in the Y direction next to the division line CX1, the division line CY1 first, and the division line CY2 later. The dividing lines CY1 and CY2 are second dividing lines that do not intersect with the outer circumferential cutting line C402. # 3 and # 4 attached to the dividing lines CY1 and CY2 in parentheses indicate the third and fourth cutting lines.

  If there are multiple dividing lines that do not intersect with the final cutting line, the cutting order is the order from the approach line (cutting start point) to the dividing line closest to the approach position than the dividing line farthest from the approach position. To do.

  Next to the dividing line CY2, the dividing order CY2 is followed by the dividing line CY3 from the boundary B24 of the sections 402 and 404 on the outer peripheral line 40 to the dividing point D0, as indicated by the thick broken line, and from the dividing point D0. The outer peripheral cutting line C402 that cuts the outer peripheral line 40 to the approach position A0 is set as the final cutting.

  # 5 given in parentheses to the dividing line CY3 and the outer peripheral cutting line C402 indicates the fifth cutting line. Since the dividing line CY3 and the outer peripheral cutting line C402 are continuously performed as one cutting line, the whole is the fifth cutting line.

  The cutting of the dividing line CY3 and the cutting of the outer cutting line C402 may be divided so that the dividing line CY3 is the fifth cutting line and the outer cutting line C402 is the final sixth cutting line. However, it is preferable that the dividing line CY3 and the outer peripheral cutting line C402 be one continuous cutting line.

  Suppose that the processing order determination unit 204 sets the dividing line CY1 before the dividing line CX1. In this order, the sections 407 and 408 fall as scrap pieces by the outer circumferential cutting line C401 and the dividing line CY1, and the sections 407 and 408 become holes. If the dividing line CX1 is processed in this state, the laser head 81 may move downward after the laser head 81 passes through the sections 405 and 406.

  Since the processing order determination unit 204 sets the dividing line CX1 before the dividing line CY1, it is possible to avoid the laser head 81 from moving downward.

  As described above, the processing order determination unit 204 initially cuts the dividing line (here, CX1) that intersects the final cutting line (outer circumferential cutting line C402) among the plurality of dividing lines (here, CX1, CY1 to CY3). It is preferable to set as a dividing line following the line (peripheral cutting line C401).

  When there are a plurality of dividing lines in the X direction, all of the plurality of dividing lines in the X direction may be set as dividing lines following the initial cutting line. The order of cutting a plurality of dividing lines in the X direction is arbitrary.

  In FIG. 11, the direction of the dividing lines CY1 and CY2 is from the bottom to the top, but it may be reversed. The direction of the dividing line CY1 and the direction of the dividing line CY2 do not have to be the same direction, and may be opposite to each other.

  Returning to FIG. 4, when the processing order determination unit 204 determines the processing order, the NC data generation unit 205 generates NC data for the NC device 30 to control the laser processing machine 100. The NC data generation unit 205 is a machining data generation unit. The NC data is supplied to the NC device 30.

  Here, the reason why it is possible to minimize the number of places where the concavo-convex portions occur when the plate material W is processed in the cutting order shown in FIG. FIG. 12A shows the vicinity of the boundary B57 between the sections 405 and 407 on the outer peripheral line 40 in an enlarged manner. FIG. 12B shows the vicinity of the dividing point D0 in an enlarged manner.

  As shown in FIG. 12A, at the boundary B57, a linear opening shown by hatching with a dividing line CY1 may be connected to the side surface of the linear opening formed in advance by the outer peripheral cutting C401. Therefore, uneven portions are unlikely to occur at the boundary B57. The same applies to the boundaries B35, B46, and B68.

  On the other hand, as shown in FIG. 12B, at the dividing point D0, the end of the linear opening formed in advance by the outer peripheral cutting C401 is hatched by the dividing line CY3 and the outer peripheral cutting line C402. The openings must be connected. Therefore, uneven portions are likely to occur at the dividing point D0.

  At the approach position A0, the start end of the outer periphery cutting line C401 and the end of the outer periphery cutting line C402 must be connected, and at the boundary B12, the start end of the dividing line CX1 and the outer periphery cutting line C402 must intersect. Uneven portions are likely to occur. In FIG. 11, there are only three places where the concavo-convex portion is generated, that is, the approach position A0, the dividing point D0, and the boundary B12.

  Next, a case where a hole having a shape other than the long angle hole described above is formed will be described. As shown in FIG. 13A, when the elongated round outer periphery line 41 is cut to form an elongated round hole, the division number / outer periphery cutting direction setting unit 202 defines, for example, a hole forming region surrounded by the outer periphery line 41. It sets so that it may divide into 411-418. It is assumed that the division number / peripheral cutting direction setting unit 202 sets the outer peripheral cutting direction clockwise.

  As shown in FIG. 13B, the outer periphery cutting approach position / division point determination unit 203 determines, for example, the position on the outer periphery line 41 of the section 418 as the approach position A1, and sets the boundaries of the sections 415 and 417 on the outer periphery line 41. The division point D1 is determined. The processing order determination unit 204 determines the cutting orders # 1 to # 5 shown in FIG. 13B.

  As shown in FIG. 14A, when the rectangular outer perimeter line 42 is cut to form a square hole, the division number / peripheral cutting direction setting unit 202 divides the hole forming area surrounded by the outer perimeter line 42 into, for example, sections 421 to 421. Set to be divided into 424. It is assumed that the division number / peripheral cutting direction setting unit 202 sets the outer peripheral cutting direction clockwise.

  As shown in FIG. 14B, the outer periphery cutting approach position / division point determination unit 203 determines, for example, the position of the section 424 on the outer periphery line 42 as the approach position A2, and sets the boundaries of the sections 421 and 423 on the outer periphery line 42. The division point D2 is determined. The processing order determination unit 204 determines the cutting orders # 1 to # 3 shown in FIG. 14B.

  As shown in FIG. 15A, when the circular outer perimeter line 43 is cut to form a round hole, the division number / peripheral cutting direction setting unit 202 divides the hole forming area surrounded by the outer perimeter line 43 into, for example, sections 431 to 434. Set to be divided. It is assumed that the division number / peripheral cutting direction setting unit 202 sets the outer peripheral cutting direction clockwise.

  As shown in FIG. 15B, the outer periphery cutting approach position / division point determination unit 203 determines, for example, the position of the section 434 on the outer periphery line 43 as the approach position A3, and sets the boundaries between the sections 431 and 433 on the outer periphery line 43. The division point D3 is determined. The processing order determination unit 204 determines the cutting orders # 1 to # 3 shown in FIG. 15B.

  As described above, when the hole forming region is divided into a plurality of columns in one row, it may be divided into a plurality of rows in one column. 16A and 16B show a case where the hole forming region is divided into a plurality of columns in one row.

  As shown in FIG. 16A, when a long rectangular hole is formed by cutting an elongated oblong outer peripheral line 44, the division number / peripheral cutting direction setting unit 202 sets a hole forming region surrounded by the outer peripheral line 44, for example, Set to divide into sections 441-444. It is assumed that the division number / peripheral cutting direction setting unit 202 sets the outer peripheral cutting direction counterclockwise.

  As shown in FIG. 16B, the outer periphery cutting approach position / division point determination unit 203 determines, for example, the position on the outer periphery line 44 of the section 4441 as the approach position A4, and sets the boundaries between the sections 441 and 442 on the outer periphery line 44. The division point D4 is determined. The processing order determination unit 204 determines the cutting orders # 1 to # 4 shown in FIG. 16B.

  The operation of the CAM 20 generating NC data will be described again with reference to the flowcharts shown in FIGS. 17 to 19 and FIGS. 20 to 25.

  In FIG. 17, the CAM 20 reads CAD data in step S01. In step S02, the CAM 20 determines whether there is a hole to be divided. When the hole forming area is larger than a predetermined size, it is not necessary to make it a division target.

  If there is a hole to be divided (YES), the CAM 20 moves the process to step S03, and if there is no hole to be divided (NO), the CAM 20 moves the process to step S10.

  The CAM 20 selects one hole to be divided in step S03, and acquires the hole shape of the selected hole in step S04. In step S05, the CAM 20 determines whether the hole shape is any one of a corner, a long angle, a circle, and a long circle.

  For example, when the hole shape is a hole shape other than an angle, a long angle, a circle, or an ellipse, such as an L shape or a star shape, it is not subject to division cutting by the method of this embodiment.

  If the hole shape is any one of a corner, a long angle, a circle, and a long circle (YES), the CAM 20 performs the allocation of divided cutting by the method of the present embodiment in steps S06 and S07. If the hole shape is not one of square, long angle, round, and long circle (NO), in step S09, the CAM 20 performs normal hole division allocation that has been performed in the past, and performs processing. The process proceeds to S08.

  In step S06, the CAM 20 sets a dividing line. In step S07, the CAM 20 generates a processing order / processing trajectory, and shifts the processing to step S08. The specific procedure of steps S06 and S07 will be described later.

  In step S08, the CAM 20 determines whether or not the machining order and the machining locus of all the holes to be divided are set. If the machining order and machining trajectory for all the holes to be divided have not been set (NO), the CAM 20 returns the process to step S03, selects a new hole to be divided, and repeats the same process.

  When the processing order and processing trajectory of all the holes to be divided are set (YES), the CAM 20 generates NC data in step S10 and ends the process. The NC data can be composed of a machine control code for the NC device 30 to control the laser processing machine 100.

  FIG. 18 shows a specific procedure of step S06. In FIG. 18, the CAM 20 (number of divisions / peripheral cutting direction setting unit 202) sets the number of divisions and the outer cutting direction in step S61.

  For example, when a rectangular hole as shown in FIG. 20 is cut to form a square hole, the CAM 20 divides the hole forming area surrounded by the outer line 45 into, for example, sections 451 to 459 and cuts the outer periphery. Set the direction counterclockwise.

  In step S62, the CAM 20 (peripheral cutting approach position / division point determination unit 203) determines sections positioned at corners (here, four corners). As shown in FIG. 21, the CAM 20 determines that the sections 451, 453, 457, and 459 are sections positioned at corners.

  In step S63, the CAM 20 (peripheral cutting approach position / division point determination unit 203) sets candidate points for the peripheral cutting approach position as indicated by black dots in FIG.

  In step S64, the CAM 20 (peripheral cutting approach position / division point determination unit 203) considers the peripheral cutting direction as illustrated in FIG. 23, and determines the sections 451 to 459 from the approach position candidate points illustrated in FIG. The final candidate points that can be dropped one by one are extracted.

  In step S64, the CAM 20 selects one candidate point from the final candidate points by automatic assignment or manual operation, and determines the approach position A5 as shown in FIG. When the approach position A5 is determined, the CAM 20 determines a dividing point D5 indicated by a white circle in step S64.

  FIG. 19 shows a specific procedure of step S07. In FIG. 19, the CAM 20 (the processing order determination unit 204) acquires a final cutting line and a dividing line that intersects the final cutting line in step S71. When the approach position A5 and the dividing point D5 are determined as illustrated in FIG. 24, the CAM 20 acquires the final cutting line C452 illustrated in FIG. 25 and the dividing lines CX1 and CX2 that intersect the final cutting line C452.

  In step S72, the CAM 20 (the processing order determination unit 204) sets the dividing line that intersects the final cutting line to be processed next to the initial cutting line.

  As shown in FIG. 25, the CAM 20 is set to process the dividing lines CX1, CX2 intersecting with the initial cutting line C451 along the outer peripheral line 45 from the approach position A5 to the dividing point D5 to the second and third. In FIG. 25, the dividing line CX1 is the second and the dividing line CX2 is the third.

  In step S73, the CAM 20 (the processing order determination unit 204) sets a parting line that does not intersect with the final cutting line to be processed next to the parting line that intersects with the final cutting line. When there are a plurality of dividing lines that do not intersect with the final cutting line, the CAM 20 sets the processing order in order from the dividing line furthest to the approach position A5 to the dividing line closer to the approach position A5.

  As shown in FIG. 25, the CAM 20 is set to process the dividing line CY1 fourth and the dividing line CY2 fifth.

  In step S74, the CAM 20 (processing order determination unit 204) sets the last cutting line to be processed last, and determines the processing order in the order set in steps S72 to S74.

  As shown in FIG. 25, the CAM 20 is set to process the final cutting line C452 last. Since the dividing line CY2 and the final cutting line C452 may be processed as a series of cutting lines, the CAM 20 sets the whole of the dividing line CY2 and the final cutting line C452 as a cutting line to be processed fifth.

  According to the procedure shown in FIG. 19, the CAM 20 can generate a processing order and a processing trajectory in which the hole forming region is divided into a plurality of sections and cut.

  According to the laser processing machine 100 of the present embodiment, the laser processing method of the present embodiment executed by the laser processing machine 100, and the processing data creation device of the present embodiment that generates processing data for controlling the laser processing machine 100. The following effects are produced by the following configurations.

  By setting 0 or 1 or more division lines in the first direction in the hole formation region, and setting one or more division lines in the second direction orthogonal to the first direction in the hole formation region, It is assumed that the formation area is set to be divided into a plurality of sections. At this time, the first position on the outer peripheral line in the section located at the corner is set as the cutting start point (approach position) for starting the cutting of the outer peripheral line, thereby forming the end of the plate W on the hole Wop side. The number of uneven portions can be reduced.

  Of the two intersections between the outer peripheral line and the dividing line in the second direction closest to the cutting start point, the intersection point closer to the cutting start point is the first intersection point, and the intersection point far from the cutting start point is the first intersection point. The intersection of two. When the perimeter line is cut from the cutting start point toward the second intersection point in a direction that passes more intersection points between the perimeter line and the dividing line, the first one that has passed the second intersection point or the second intersection point The second position on the outer peripheral line in the section is set as a dividing point for dividing the cutting of the outer peripheral line.

  By setting the second position on the outer circumference line in the first intersection past the second intersection or the second intersection point as a dividing point that divides the cutting of the outer circumference line, it is possible to reduce the number of uneven portions. it can. By dividing the cutting of the outer peripheral line, the quality of the cut surface of the outer peripheral line can be improved while avoiding the laser head 81 moving downward.

  The initial cutting line is defined from the cutting start point to the dividing point on the outer peripheral line. When the final cutting line is from the dividing point on the outer peripheral line to the cutting start point, the hole forming region is cut so that the sections other than the section including the final cutting line fall as one section. By cutting the dividing line in the second direction closest to the cutting start point and the final cutting line, the section including the final cutting line is cut so that it falls last.

  By setting it as such a processing order, each division which divided | segmented the hole formation area can be dropped as one scrap piece.

  Specifically, when the dividing line in the first direction is set, the hole forming region is divided by one or more dividing lines intersecting with the final cutting line after the cutting of the initial cutting line. Next, the hole forming region is divided by a dividing line that does not intersect the final cutting line.

  In addition, when a plurality of dividing lines in the second direction are set, the hole forming region is located on the side closer to the cutting start point than the dividing line in the second direction farthest from the cutting start point. Cut sequentially into dividing lines in the direction of 2.

  If candidate points are extracted according to the peripheral cutting direction from a plurality of candidate points located on the outer peripheral line in the section located at each corner in the plurality of sections, appropriate candidates according to the preset peripheral cutting direction From the points, the approach position can be determined.

  If the divided cutting according to the present embodiment is limited to when the shape of the hole forming region is any one of a corner, a long angle, a circle, and an oval, each of the above effects can be achieved accurately.

  The present invention is not limited to the embodiment described above, and various modifications can be made without departing from the scope of the present invention. Instead of dropping the scrap (scrap piece) from the skid interval of the plate-like skid 61 or the rod-like skid, the scrap (scrap piece) may be dropped from the cutting plate.

20 CAM (Processing data creation device)
30 NC unit (control unit)
40-45 outer circumference line 70 frame (movement mechanism)
80 Carriage (movement mechanism)
81 Laser head 100 Laser processing machine 201 Target hole data acquisition unit 202 Division number / peripheral cutting direction setting unit (division number setting unit, outer cutting direction setting unit)
203 Peripheral cutting approach position / division point determination unit (peripheral cutting approach position determination unit, division point determination unit)
204 Machining order determination unit 205 NC data generation unit (processing data generation unit)
W plate material Wop hole

Claims (14)

A laser head for irradiating a laser for cutting the plate material with respect to the plate material;
In a state where the laser head is separated from the plate material by a predetermined distance, the laser head is positioned relative to the plate material in a first direction along the surface of the plate material and a first direction orthogonal to the first direction. A moving mechanism for moving in the direction of 2;
The moving mechanism moves the laser head relative to the plate material in the first and second directions, cuts a hole forming region surrounded by a predetermined outer peripheral line with a laser, and forms a hole in the plate material. A control device for controlling to form
With
The controller is
By setting 0 or 1 or more dividing lines in the first direction in the hole forming region, and setting one or more dividing lines in the second direction orthogonal to the first direction in the hole forming region. When the hole forming region is set to be divided into a plurality of sections, the first position on the outer peripheral line in the section located at a corner is set as a cutting start point for starting the cutting of the outer peripheral line,
Of the two intersections between the outer peripheral line and the dividing line in the second direction closest to the cutting start point, the intersection on the side close to the cutting start point is separated from the first intersection and the cutting start point. When the side intersection is a second intersection and the outer circumferential line is cut from the cutting start point toward the second intersection in a direction that passes more intersections between the outer circumferential line and the dividing line , The second position on the outer circumference line in the first section that has passed the second intersection or the second intersection point is a dividing point for dividing the cutting of the outer circumference line,
Cutting from the cutting start point in the outer peripheral line to the dividing point as an initial cutting line,
When the area from the division point to the cutting start point on the outer peripheral line is a final cutting line, the hole forming region is cut so that the sections other than the section including the final cutting line fall as one section. ,
By cutting the dividing line in the second direction closest to the cutting start point and the final cutting line, the section including the final cutting line is controlled to be cut so as to drop last. Laser processing machine. The controller is
The second intersection point as the dividing point;
2. The laser processing machine according to claim 1, wherein control is performed to cut the dividing line in the second direction closest to the cutting start point and the final cutting line as a series of cutting lines.   The control device, when one or more dividing lines in the first direction is set, after cutting the initial cutting line in the hole forming region, before cutting the dividing line in the second direction, 3. The laser beam machine according to claim 1, wherein control is performed to cut the dividing line in the first direction. 4.   When a plurality of dividing lines in the second direction are set, the control device has the cutting line closer to the cutting start point than the dividing line in the second direction farthest from the cutting start point. The laser beam machine according to any one of claims 1 to 3, wherein the laser beam machine is controlled so as to be cut sequentially into a dividing line in the second direction. A dividing line of zero or one or more first directions is set in a first direction in a hole forming region surrounded by a predetermined outer peripheral line in the plate material, and a second perpendicular to the first direction in the hole forming region is set. When the hole forming region is set to be divided into a plurality of sections by setting one or a plurality of second direction dividing lines in the direction of A cutting start point for starting cutting of the outer peripheral line is set at a position of 1,
Of the two intersections between the outer peripheral line and the dividing line in the second direction closest to the cutting start point, the intersection on the side close to the cutting start point is separated from the first intersection and the cutting start point. When the side intersection is a second intersection and the outer circumferential line is cut from the cutting start point toward the second intersection in a direction that passes more intersections between the outer circumferential line and the dividing line A dividing point for dividing the cutting of the outer circumferential line is set at a second position on the outer circumferential line in the first section after the second intersecting point or the second intersecting point;
Cutting from the cutting start point in the outer peripheral line to the dividing point as an initial cutting line,
When the area from the division point to the cutting start point on the outer peripheral line is a final cutting line, the hole forming region is cut so that the sections other than the section including the final cutting line fall as one section. ,
By cutting the dividing line in the second direction closest to the cutting start point and the final cutting line, the section including the final cutting line is cut so as to drop last. Processing method. The dividing point is set at the second intersection;
6. The laser processing method according to claim 5, wherein the dividing line in the second direction closest to the cutting start point and the final cutting line are cut as a series of cutting lines.   When one or more dividing lines in the first direction are set, after cutting the initial cutting line in the hole forming region, before cutting the dividing line in the second direction, the first direction 7. The laser processing method according to claim 5, wherein the dividing line is cut.   When a plurality of dividing lines in the second direction are set, the cutting direction in the second direction closer to the cutting start point than the dividing line in the second direction farthest from the cutting start point. The laser processing method according to any one of claims 5 to 7, wherein the laser beam is cut into division lines in order. Based on the graphic data in which a hole forming area for making a hole of a predetermined size and shape is set in the plate material, the hole forming area is divided into zero or one or more division lines in the first direction and one or more of the above-mentioned ones. A division number setting unit for setting the number of divisions by a dividing line in a second direction orthogonal to the first direction;
An outer periphery cutting direction setting unit for setting a cutting direction for cutting the outer periphery of the hole forming region;
Peripheral cutting approach position determination for determining a first position on the outer peripheral line in a section located at a corner when the hole forming region is divided into a plurality of sections as an approach position that is a position to start cutting the outer peripheral line And
Of the two intersections of the outer peripheral line and the dividing line in the second direction closest to the approach position, the intersection closer to the approach position is the first intersection, and the intersection far from the approach position Is the first intersection that has passed the second intersection or the second intersection when the outer circumferential line is cut in the cutting direction from the approach position toward the second intersection. A dividing point determination unit that determines a second position on the outer circumferential line as a dividing point that is a position for dividing the cutting of the outer circumferential line;
A processing order for processing the hole forming region,
(1) Cutting in the cutting direction set by the outer periphery cutting direction setting unit with the initial cutting line from the approach position to the dividing point in the outer periphery line;
(2) When the area from the dividing point to the approach position on the outer peripheral line is the final cutting line, the recording hole forming region is such that the sections other than the section including the final cutting line fall as one section. Cutting;
(3) By cutting the hole forming region from the dividing line in the second direction closest to the cutting start point and the final cutting line, the section including the final cutting line is finally dropped. Cutting into;
A processing order determining unit that determines the order of (1) to (3),
A processing data generation unit that generates processing data for controlling the laser processing machine to process the plate material in the processing order determined by the processing order determination unit;
A processing data creation device comprising: The outer periphery cutting approach position determination unit
Extracting candidate points according to the cutting direction from a plurality of candidate points located on the outer circumference in the sections located at respective corners in the plurality of sections,
The machining data creation device according to claim 9, wherein a candidate point selected from the extracted candidate points is set as the first position.   When the dividing line in the first direction is set to one or more, the processing order determination unit determines the processing order (2) after cutting the initial cutting line in the hole forming region and then in the second direction. 11. The processing data creation device according to claim 9, wherein the processing order is determined to cut the dividing line in the first direction before cutting the dividing line.   When a plurality of dividing lines in the second direction are set, the processing order determining unit determines the processing order (2) from the dividing line in the second direction that is farthest from the cutting start point. The processing data creation device according to any one of claims 9 to 11, wherein the processing order is determined as a processing order of cutting in order into the dividing line in the second direction closer to the cutting start point.   The processing order determination unit determines the processing order (3) as a processing order for cutting the dividing line in the second direction closest to the approach position and the final cutting line as a series of cutting lines. The processing data creation device according to any one of claims 9 to 12.   The division number setting unit, the outer circumferential cutting direction setting unit, the outer circumferential cutting approach position determination unit, the division point determination unit, the processing order determination unit, the processing data generation unit, the shape of the hole forming region is a corner, The processing data creation device according to any one of claims 9 to 13, wherein each operation is performed when the shape is any one of a long angle, a circle, and a long circle.

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